Pressed-steel pulley



J. R. MARCHESSEAULT.

PRESSED STEEL PULLEY.

APPLICATION FILED JUNE 7, 1919.

1,329,790,. Patented Feb. 3,1920.

514/0 e/nk 01L I 7 g wafi- Willi mamas 27 2 k 22 6 flttoumi JOSEPH ;BOIMARGHESSEAULTN U5 EVORGESTER, MASSACHUSETTS, ASSIGNOR .TO

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oonrone'rron or nisssecnnsnrrs.

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nnnssnns'rnm. PULLEY.

Specification of Letters latent.

Patented Feb. 3,1920.

Application filed June 7, 1919. Serial No. 302,453.

To (ZZZ whom it may concern Be it known that I, JOSEPH Roi MAP.-orrnssnAuLr, a citizen of the United States, residing at lVorccster, inthe county of lVorcester and State of Massachusetts, have invented newand useful Improvements in Pressed-Steel Pulleys, of which the:lollowing is. a specification.

This invention relates to the inanut'act iire of pulleys and wheels fromsheet metal, and more particularly to sectional or split pulleys madeofpressed steel, and its object is to produce a pulley which will havemaximum strengtl'i ith relatively small weight, which can be mounted onor removed from a shaft quickly and easily without the necessity ofdisturbing other pulleys adjacent to it on the same shaft, which will beclean and have no projecting parts to catch in anything and, generally,which will be a safety pulley to alhigh degree.

l Vhile certain features Oftllt) construction can be advantageously usedin solid wheels and pulleys, the preferred form of the in vention is thesplit pulley in which all the advantages of the improved constructionare fully realized.

The invention is illustrated in the accompanying drawing, in which.Figure 1 is a cross section of the preferred fornrof pulley, or it maybe'considered as a front view of one half of a split pulley; Fig. 2 is aside elevation of the san'ie, with one half in I section; Fig. 3 is aview similar to Fig. 1 of a modified construction, suitable for smallpull eys, and Fig. 4 is a similar view showing a construction suitablefor a solid or nonsplit pulley or wheel. I

I will first describe the split pulley shown in Figs. land 2. The outermembers co1nprise the rim. portions 1. 1, and the concave web portions2, 2." The latter have a semicircular opening 3. inwardly flanged as at4-, which fits around the haliibushing 5. Each inner member consists ofa conical diskor web portion 6 which also has a semi-circular 0 Killing:3 outwardlv flanged as at 9 to lit the bushing, a short radial porti on7, and an outwardly extending flange 8 on the latter. The radialportions 7, 7, of the two in ner members are placed back to back andunited by spot welding, riveting, bolting, or

the like, and the rim portions 1,1, of the two outer members aresimilarly secured to the two members each flanges 8, 8. Prongs 13 areformed on the clamps 10, which pass through holes in the flange andbushing and are riveted over on the inside of the latter. as shown inFig. 1.

Fig. 2 illustrates a construction for a small wheel Ol' pulley, in whichthe inner members may be omitted. It consists 01 having a rim portion 15and a web portion 16, the latter being centrally cutaway to fit over thebushing 5 and having a flange 17 around the said opening.

A ring 18 is placedinside the rim portions at their meeting edges and issecured thereby welding or equivalent means.

This form may be used in a split pulley or in a solid one. lVhen in theformer, the same kind of clamps are used to clamp the pulley on theshaft as are used in Figs. 1 and 2, in which the, semi-circular clampmembers are indicated at 10 and the clamp ing bolts at 11. The'bolts aresocket wrench inserted through the openings'lSZ, formed in the rimportions of the outer members for that purpose.

A somewhat dilt'erent form of construction is shown in F ig, l, adaptedtor asolid pulley, but more especially for wheels of trucks, such as areused in manufacturing shops. Here the rim' portion 20 of one outermember lies wholly within the rim member 20 of the other outer member.Each outer In ember comprises the web portion 21, which in ay-beconcaved or not, as desired, and which has the inwardly flanged opening22 fol-the hub or bushing 5. Eachinner membcrconr prises the conicalportion cured to the inner rim portion 20. In this form the flanges 26on the inner members 'eX- tend inwardly and conform to and fit in theflanges 27 of the webportions ofthe outer members.

It will be noticed that these pulleys present unbroken smooth externalsurfaces. whereby the danger:of'catchingones clothingis obviated, theplacing of abelt is ren deredeasier and safer. and the pulleyscan evenbe cleaned while running actuated by a 23. the radial pOl tron and theperipheral 'flange25. se-

The absence ofall external sea1ns,joints.

or gaps, as in the ordinary split'pulley, makes a cheaper. truerrunning, better bal anced andstronger pulleythan any heretofore on themarket, as far as I am aware. The meeting edges of the run portions mayportions and welded cess to said clamps. I

sists of: two rim members external semi-circular webs With nwardly bespun into the groove between the radial so that the surface of the rimis left perfectly smooth.

The pulley, although light, is extremely strong.

Having thus described what I claim is:

1. A sheet metal wheel or pulley comprising two outer member iC'llconsisting of a rim portion and an external web portion, the latterhaving a flanged central aperture, and two inner members, eachconsisting of a conical. web portion having a short radial portion and aflange at its periphery and also having a flanged central aperture, anda bushing fitted in said apertures, all said my invention,

parts being permanently united at meeting points.

A split pulley, each half oil which cointo circular pressed steelmembers, each comprising a run portion and an external web prisessemi-circular bushi and two so portion, the meeting edges or" said rimportions being united together and the web portions being apertured tofit over said bushing and connected thereto, and clamps fitting over thebushing to attach the two halves of the pulley together, said rimportions being apertured to permit access to said clamps.

.3. A split pulley, built up 01 two pressed steel members havingintegral rim and web portions, two inner pressed steel conical membersplaced back to back and united to said rim portions, and a half bushing,said web portions and conical members being apertured to fit said halfbushing and connected thereto, and clamps fitting over the bushing toattach the two halves of the pulley together, said rim portions beingapertured to permit aceach half of which coni. A'split pulley,

having integral flanged semi-circular central apertures; two

conical disk spoke members having outwardly flanged semi-circularcentral apertures andL peripheral flanges united to said rim neinbers;and a half bushing secured within said apertures, said rim membersprovided with openings to enable the halves to be assembled on a shaft.

A split pulley, each half of which is built up of two outer members, twoinner members, and a half bushing, each outer member comprising a rimportion and. an external web portion, and each inner member comprising aconical portion, a pcripheral flange, and a short radial portionconnecting said flange to said conical portion, said web and conicalportions being recessed to fit said haltbushing, and clamp between saidweb and like, two of said parts each half of which is said half bushingconical portions to connect he two half pulleys together, said rimportions having openings to give access to said clamps.

6. A split pulley, each half of which consists of four pressed steelparts and a half bushing, all united by spot welding or the constitutingthe outer or rim members and the other two the inner or spoke members,each outer member consistingoi a rim portion and an external webportion, the latter being recessed to fit over said halt bushing, andeach inner member consisting oi a conical web portion, recessed to fitover said half bushing, a short radial portion and a flange on thelatter, said flanges fitting within the meeting edges of said rimportions and said radial portions of the two inner members contactingwith each other, and said rim portions having openings to permit accessto means to clamp the two half pulleys together on a shaft.

7. A wheel or pulley built up of two outer and two inner pressed steelparts and a bushing, each of the outer partsco-nsisting oi a rim portionand a concave web portion, having an inwardly flanged central opening toreceive said bushing, and each of the inner parts consisting of aconical portion, having an outwardly flanged central. opening to receivesaid bushing, a short radial portion, and a peripheral flange on thelatter, said flanges being permanently connected to the meeting edges ors: d rim porti ns and said radial portions being permanently connectedtogether. 7

S. A split pulley comprising pressed steel outer members, each havin arim portion and an external. web portion,and pressed steel inner memberscomprising web 'por tions supporting said rim portions, and clamps tounite the halves of the iiulley located between theweb portions of theouter .iembers and the web portions of the inner members, whereby theyare concealed and protected, said rim portions being apertured to permitactuation of said clamps.

9. A split pulley each half of which consists of a semi-cylindrical hubmember, two pressed steel, semi-circular web members, havingconstituting rim portions, fitted on the ends of said hub member, areinforcing member between said web memmembers fitting around bers andsecurec portions, and clamping 11163115011 said hub member to secure thetwo half pulleys together, said rim portions being apertured to permitaccess to said clamping means.

In testimony whereof I have h reunto set my hand. 1 v I JOSEPH ROIMARGHESSEAULT,

\ on the inside of said rimlit

